The Correlation between Radiated Emissions and Power Line Network Components on Indoor Power Line Communications

Residential power lines are one of the most attractive communication media for home networking, since every room in a house has multiple power outlets. In general, in-home power line networks have various network components which are not related to communications. The power line network includes many electrical appliances without communication facilities, switches, and so on. These components will cause electrical unbalance of the power line network and increase radiated emissions. We investigate that each power line network component has an impact on the electrical unbalance and the radiated emissions quantitatively by an experiment. As the result, we show that the radiated emissions and the electrical unbalance of the network vary significantly as the wired network components. Furthermore, our result indicates that the radiated emission is especially large in the case where the network contains a fluorescent light or a single-pole switch.